601631 has 2 divisors, whose sum is σ = 601632. Its totient is φ = 601630.

The previous prime is 601607. The next prime is 601651. The reversal of 601631 is 136106.

601631 is nontrivially palindromic in base 15.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-601631 is a prime.

It is a super-2 number, since 2×601631² = 723919720322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p₄₉₂₂₀ and since 601631 and 49220 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (601651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300815 + 300816.

It is an arithmetic number, because the mean of its divisors is an integer number (300816).

2⁶⁰¹⁶³¹ is an apocalyptic number.

601631 is a deficient number, since it is larger than the sum of its proper divisors (1).

601631 is an equidigital number, since it uses as much as digits as its factorization.

601631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 601631 is about 775.6487607158. The cubic root of 601631 is about 84.4196217565.

Adding to 601631 its reverse (136106), we get a palindrome (737737).

The spelling of 601631 in words is "six hundred one thousand, six hundred thirty-one".